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sinara-hw / Stabilizer

2-channel microcontroller servo with EEM and Ethernet based on STM32 CPU
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quadspi read contention #77

Closed jordens closed 3 years ago

jordens commented 4 years ago

The quadspi peripheral has a half clock cycle read contention bug (at least in the AD9959 use case).

Tracking https://github.com/quartiq/stabilizer/issues/101 here as well since it is likely a silicon hardware issue that would affect any firmware.

gkasprow commented 3 years ago

can we do something with it in HW? Is this issue described in STM32 errata?

jordens commented 3 years ago

There was no erratum. Apart from the existing 50R series I don't see what could be done. Also we don't expect to do that many reads so for most applications this won't be critical.